From patchwork Thu Nov 7 11:47:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 841592 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25390212183; Thu, 7 Nov 2024 11:48:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.11.138.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730980082; cv=none; b=q3XssHq1EVxWlWeVXlKhbef3ylE5oPIr9wkh47Ez7u1F7zcFVhZGmKFIKqkSqcZXDAudqOyFUwqkFb8gjmxL41K/zsK2qlkTg9GnpQtSuUxd05Bekq+2rBrZY1isGR/eDvez8q1R48IRbnuKuCd6Nn81uP2MKp2vRFGVdUToes0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730980082; c=relaxed/simple; bh=PRAw6ugHPrefOkrLvhBR5eOG83D/eQhFr4FdkSMhwDI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q8fyCTGuDH7HMnJOK5UIBvoMmceN2+JcdLUbb7mE4hW/tg6eqLTS7iiW3/7fld9yqZBgmr2OhuOrShyNWIcmLjKHq8KhdI6WkgPg8BWfreZ5tq9aPbxPOdKRu9aaj7MvB233eyv7JN6VVTMmGroqafWEN0c3m3qCw7A3e1/f+00= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de; spf=pass smtp.mailfrom=sntech.de; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b=vLcp2aRD; arc=none smtp.client-ip=185.11.138.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sntech.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b="vLcp2aRD" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=z4S7eFAqOKlyh0GLmEWkpvO9ikI1XkubVMydYt9t5D8=; b=vLcp2aRDwCSVwAoqK7+/n31gD/ 7pj/YV9z9UmFqiQb3zgVSjTeWqcggKAbbNcrqXf3t72o6Wrjw/h5ZiHDFJA7nVq11AH28hvkXbprD /zJuGZh4FTBtFkBVnM89jFuT5pNS63bOEDXe3tBNTXAvygkHDrcRsk648E5IIui0zzX66a+77F9e9 013SZvC1FrBEZyrN+PaPiFq02VcrH7HdcW9/ORKUALAtjZHU9VPIFIhaUNXLjZlsBvzBtWunwi8tt RDZH5xF/SdTjmNRrRg944sfttUsdBXa6vkOyufCKv2JtY02Ma5k7i8U9Qie4LrXgOFLG23IFUE62w 0UE1gw0A==; Received: from i53875b28.versanet.de ([83.135.91.40] helo=localhost.localdomain) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1t90yz-0005lF-IE; Thu, 07 Nov 2024 12:47:25 +0100 From: Heiko Stuebner To: lee@kernel.org, jikos@kernel.org, jic23@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, jdelvare@suse.com, linux@roeck-us.net, srinivas.pandruvada@linux.intel.com, bentiss@kernel.org, dmitry.torokhov@gmail.com, pavel@ucw.cz, ukleinek@debian.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-input@vger.kernel.org, linux-iio@vger.kernel.org, linux-leds@vger.kernel.org, heiko@sntech.de Subject: [PATCH v9 2/9] mfd: core: make platform_data pointer const in struct mfd_cell Date: Thu, 7 Nov 2024 12:47:05 +0100 Message-ID: <20241107114712.538976-3-heiko@sntech.de> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241107114712.538976-1-heiko@sntech.de> References: <20241107114712.538976-1-heiko@sntech.de> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The content of the platform_data of a struct mfd_cell is simply passed on to the platform_device_add_data() call in mfd_add_device() . platform_device_add_data() already handles the data behind that pointer as const and also uses kmemdup to create a copy of the data before handing that copy over to the newly created platform-device, so there is no reason to not extend this to struct mfd_cell, as the old copy in the mfd_cell will be stale anyway. This allows to pass structs gathered from of_device_get_match_data() as platform-data to sub-devices - which is retrieved as const already. Signed-off-by: Heiko Stuebner --- include/linux/mfd/core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index e8bcad641d8c..faeea7abd688 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -72,7 +72,7 @@ struct mfd_cell { int (*resume)(struct platform_device *dev); /* platform data passed to the sub devices drivers */ - void *platform_data; + const void *platform_data; size_t pdata_size; /* Matches ACPI */